Now we let them expand, giving this picture at time 1.
Now lets overlay the blue galaxies on the red galaxies to appreciate what it looks like.
The x marks the spot, say our galaxy, where I superimposed the images.
We can try it with another spot.
No galaxy is special. No galaxy is at the center of the expansion.
Also, the universe has no edge. At least we don't see an edge and there is no reason to think that it has one.
So the simplest picture is that at any one time, the universe just goes on forever.
If I bring the red galaxies closer together, here is what we get.
Let's draw some lines to show how the galaxies have moved.
If we go backwards in time, it goes from this,
Davison E. Soper, Institute of Theoretical Science, University of Oregon, Eugene OR 97403 USA firstname.lastname@example.org